Method for preparing organic copper complex of organic copper antibacterial polyamide yarn

Abstract

The invention discloses a method for preparing an organic copper complex of organic copper antibacterial polyamide yarn. The method for preparing the organic copper antibacterial polyamide yarn comprises the following steps: mixing urea, hexanolactam and acetamide according to a ratio of 1:(0.2-0.4):(0.2-0.4) in parts by weight to prepare a coordinated ionic liquid; adding sodium chlorate, potassium permanganate, sodium peroxide and copper powders according to a ratio of 1:(1-2):(1-2):(2.5-2.9) in parts by weight into 3-3.5 parts by weight of the coordinated ionic liquid to prepare the organic copper complex; slicing the organic copper complex and PA6 which are in a ratio of (80-86):(14-20) in parts by weight and putting them into a twin-screw extruder to prepare a spinning fusant, spinning, cooling and winding to form a cylinder. In the present invention, copper elements exist in fibers in an ionic state and form chemical chelation with fiber molecules, so that the organic copper complex is unlikely to fall off and has remarkable antibacterial functions. Furthermore, the addition amount of organic copper is reduced, the fiber color is lighter, which is beneficial to dyeing, therefore, the organic copper complex has broad market development prospect in the production field of textiles with health care functions.

1 . A method for preparing an organic copper complex of organic copper antibacterial polyamide yarn, which is characterized in that it comprises:
 Step A10: preparing a coordinated ionic liquid;   mixing urea, hexanolactam and acetamide evenly according to a ratio of 1:(0.2-0.4):(0.2-0.4) in parts by weight, and then heating until hexanolactam and urea are both fully melted into liquid to obtain the coordinated ionic liquid; and   Step A20: preparing an organic copper complex;   taking sodium chlorate, potassium permanganate, sodium peroxide and copper powders according to a ratio of 1:(1-2):(1-2):(2.5-2.9) in parts by weight to obtain a first component, adding the first component into 3-3.5 parts by weight of the coordinated ionic liquid, stirring evenly, the copper powders are fully oxidized to monovalent ions and form coordinated ions with the organic compound, cooled and then put them into pure water to obtain the organic copper complex.   
     
     
         2 . The method for preparing organic copper complex according to  claim 1 , it is characterized in that, in step 10, heating temperature is 100-120° C., and the temperature is maintained for 0.5-1.0 hour, until the hexanolactam and urea are fully liquefied evenly. 
     
     
         3 . The method for preparing organic copper complex according to  claim 1 , it is characterized in that, no precipitation and color change occurred after the organic copper complex was left for 3-4 days. 
     
     
         4 . A method for manufacturing an organic copper antibacterial polyamide yarn, which is characterized in that it comprises:
 Step B10: preparing an organic copper complex by using the method according to  claim 1 ;   Step B20: Slicing the organic copper complex and PA6 which are in a ratio of (80-86):(14-20) in parts by weight and putting them into a twin-screw extruder, mixing and melting to form a spinning fusant; and   Step B30: spinning the spinning fusant by a spinning jet, cooling and winding to form a cylinder.   
     
     
         5 . The method for manufacturing an organic copper antibacterial polyamide yarn according to  claim 4 , it is characterized in that, in Step B20, the temperature of each region of the twin-screw extruder is set to 260-273° C., the screw diameter of the twin-screw extruder is 67 mm, and a ratio of screw length to screw diameter is 36:1. 
     
     
         6 . The method for manufacturing an organic copper antibacterial polyamide yarn according to  claim 5 , it is characterized in that, in Step B30, the condition under which the spinning fusant is spinned into the organic copper antibacterial polyamide yarn is:
 the temperature of spinning is 259-265° C., the pressure of the spinning jet is 15-16 MPa, lateral blowing speed is 40-42 m/min, lateral blowing temperature is 19-20° C., and lateral blowing humidity is 80-85%;   two oil injection nozzles are used to inject polyester oil, the distance between the spinning jet and the two oil injection nozzles is 1340-1360 mm, and the concentration of the oil is 10-12%;   the spinning tension is 12-18 cN, and spinning speed is 4000-4500 m/min; and the content of copper element of the obtained organic copper antibacterial polyamide yarn is 0.98-2.60%.   
     
     
         7 . The method for manufacturing an organic copper antibacterial polyamide yarn according to  claim 4 , it is characterized in that, the PA6 is spinning PA6, and its relative viscosity is 2.5.